Another GROUP BY fix for MySQL
Another GROUP BY fix for MySQL

https://github.com/friendica/friendica/issues/3322

annando/friendica,friendica/friendica,friendica/friendica,friendica/friendica,tobiasd/friendica,tobiasd/friendica,annando/friendica,fabrixxm/friendica,friendica/friendica,fabrixxm/friendica,fabrixxm/friendica,tobiasd/friendica,tobiasd/friendica,tobiasd/friendica,friendica/friendica,fabrixxm/friendica,annando/friendica,annando/friendica,fabrixxm/friendica,annando/friendica